2013•Journal of Shangqiu Normal UniversityRequires access

Synthesis of butyraldehyde 1,2-Propanediol Acetal using H_3PW_(12)O_(40)/SiO_2 as Catalyst

Li Yu

Abstract

Butyraldehyde 1,2-propanediol acetal was synthesized from butyraldehyde and 1,2-propanediol in the presence of H3PW12O40/ SiO2.The factors influencing the synthesis were discussed and the best conditions were found out.The optimum conditions are: molar ratio of butyraldehyde to 1,2-propanediol is 1∶ 1.4,the quantiy of catalyst is equal to 1.0% of feed stocks,the volume of cyclohexane as the water-carrying agent is 6 mL,and the reaction time is 60 min.H3PW12O40/ SiO2 is an excellent catalyst for synthesizing butyraldehyde 1,2-propanediol acetal and its yield can be up to 87.9%.

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Key concepts: Butyraldehyde, Acetal, Propanediol, Cyclohexane, Chemistry, Catalysis, Yield (engineering), Molar ratio